Mine



W. L. McNULTY I MINE- APPLICATIQN FILED AUG.8. 1919.

1,327,488. Patented Jan. 6,1920.

WITNESS: IN VEN TOR.

' ATTORNEK.

rares HALTER. LAW'RENCE MCNULT r, PEACE DALE, RHODE ISLAND.

'MINE.

To all whom it may concern:

lie it known that I, WALTER L. MGNULTY, a citizen of the United States, residing at Peace Dale, in the county of Washington and State of Rhode Island, have invented new and useful Improvements in Mines, of which the following is a specification.

The present invention comprehe-nds the provision oi a float mine equipped with a w -"s receiving apparatus, so teat the be exploded from a remote point. 1 as nature and advantages of the invention will be better umlerstood from the following detailed description taken in c0111 nection with the accompanying drawing, the invention residing in the construction, combination and arrangement of parts as claimed.

In the drawing forming part of this specification like numerals of reference indicate similar parts in the several views wherein Figure 1 is a sectional view through both the float and the explosive member sus pended therefrom.

Fig. 2 is an end elevation partly in section of the float member.

Referring to the drawing in detail, A indicates generally the float while the form of explosive member is indicated generally at B: The float may be of any suitable construction but preferably consists of a casing 10 divided by the partitions 11 to define air chambers 12. The casing 10 is further divided by the partitions 13 to provide a compartment 14-. for the reception of the storage batteries while the compartment 15 accommodates the wireless receiving apparatus. The receivin apparatus may be of any desired construction, the antenna or aerial wire thereoi being supported between the two standards 16 rising from the float and braced by means of guy wires 17. One side of the casing 10 may be detachably or removably associated with the remaining portion of the casing to permit access to be had to the receiving apparatus when desired.

The mine or explosive member indicated at B is suspended by the cables 18 to the float-casing 10 and may be of any suitable construction. 1 V ithin the member B is a casing 20 at the lower end of which is arranged the detonator while a plunger or Specification of Letters Patent.

ioation filed August 8, 1813.

Patented Jan. 6, 1920.

Serial no. 316,121.

hook like elements 23 are the magnets 24:

which are connected in circuit with the receiving apparatus of the float by means of the wires 25. In practice, the waves emitted from the sending apparatus fall upon the antenna or aerial wire 15 of the wireless receiving apparatus whereby current is directed to the magnets 24. When the latter are energized, the upright elements 23 are attracted and moved out of engagement with the plunger 21. The spring 26 then functions to forcibly drive the plunger against the detonator 22 with a resultant explosion of the member B. Manifestly, the mine or explosive member B can be controlled from remote points in simple yet positive manner.

While I have shown and described what I consider the preferred embodiment of the invention, I desire to have it understood that I do not limit myself in this connection and that such changes may be resorted to when desired as fall within the scope of what is claimed.

What I claim is:

1. The combination with a float, of an explosive member suspended from said float and including a detonator, a spring pressed. plunger, pivoted hook-like elements normally holding the plunger in spaced relation to the detonator, and electrical means connected in circuit with said receiving apparatus for effecting a release of said elements to permit actuation of said plunger.

2. The combination with a float, of an explosive member suspended from said float and including a spring pressed plunger, pivoted hook-like members arranged at oppo- =ite sides of said plunger and designed to engage the latter to hold the same in an inactive position, a detonator, a magnet ar partitions dividing said casing into air chambers at the opposite ends of the casing, a third partition dividing the space between the aforementioned partitions into separate compartments for the reception of a wireless receiving apparatus and batteries, said receiving apparatus including an antenna projecting above the float, and a mine or explosive suspended from said float and including an electrically operating detonating 10 mechanism.

In testimony whereof I aflix my signature.

WALTER LAWRENCE MGNULTY. 

